Paper Publications

[1] D. H. Kang, H. S. Jung, N. Ahn, J. Lee, S. Seo, K-. Y. Suh, J. Kim*, K. Kim* “Biomimetic detection of aminoglycosidic antibiotics using polydiacetylene-phospholipids supramolecules” Chemical Communications, 48(43), 5313-5315 (2012)

[2] D. H. Kang, H. S. Jung, N. Ahn, S. M. Yang, S. Seo, K. Y. Suh, P.S. Change, N. L. Jeon*, K. Kim* “Janus-compartmental alginate microbeads having polydiacetylene liposomes and magnetic nanoparticles for visual lead (II) detection” ACS applied materials & interfaces, 6(13), 10631-10637 (2014)

[3] S. M. Kang, N. Ahn, J.-W. Lee, M. Choi*, N.-G. Park* “Water-repellent perovskite solar cell” Journal of Materials Chemistry A, 2(47), 20017-20021 (2014)

[4] J.-W. Lee, S. H. Lee, H.-S. Ko, J. Kwon, J. H. Park, S. M. Kang, N. Ahn, M. Choi, J. K. Kim*, N.-G. Park* “Opto-electronic properties of TiO2 nanohelices with embedded HC(NH2)2PbI3 perovskite solar cells” Journal of Materials Chemistry A, 3, 9179-9186 (2015) 

[5] N. Ahn+, D.-Y. Son+, I.-H. Jang, S. M. Kang, M. Choi*, N.-G. Park* “Highly Reproducible Perovskite Solar Cells with Average Efficiency of 18.3% and Best Efficiency of 19.7% Fabricated via Lewis Base Adduct of Lead(II) Iodide” Journal of the American Chemical Society, 137(27), 8698-8699, (2015)

[6] N. Ahn+, S. M. Kang+, J.-W. Lee, M. Choi*, N.-G. Park* “Thermodynamic regulation of CH 3 NH 3 PbI 3 crystal growth and its effect on photovoltaic performance of perovskite solar cells” Journal of Materials Chemistry A, 3(39), 19901-19906, (2015)

[7] H. Sung+, N. Ahn+(co-first), M. S. Jang, J.-K. Lee, H. Yoon, N.-G. Park, M. Choi* “Transparent Conductive Oxide-Free Graphene-Based Perovskite Solar Cells with over 17% Efficiency” Advanced Energy Materials, 6(3), (2015)

[8] H.-S. Kim, I.-H. Jang, N. Ahn, M. Choi, A. Guerrero, J. Bisquert, N.-G. Park* “Control of I–V Hysteresis in CH3NH3PbI3 Perovskite Solar Cell” The Journal of Physical Chemistry Letters, 6(22), 4633-4639 (2015)

[9] D.-Y. Son+, J.-W. Lee+, Y. J. Choi, I.-H. Jang, S. Lee, P. J. Yoo, H. Shin*, N. Ahn, M. Choi, D. Kim*, N.-G. Park* “Self-formed grain boundary healing layer for highly efficient CH3 NH3 PbI3 perovskite solar cells” Nature Energy, 1, 16081 (2016)

[10] N. Ahn+, K. Kwak+, M. S. Jang, H. Yoon, B. Y. Lee, J.-K Lee, P. V. Pikhitsa, J. Byun, M.Choi* “Trapped charge driven degradation of perovskite solar cells” Nature Communications, 7, 13422, (2016)

[11] J. Yoon+, H. Sung+, G. Lee, W. Cho, N. Ahn, H. S. Jung*, M. Choi* “Super Flexible, High-efficiency Perovskite Solar Cells Employing Graphene Electrodes: Toward Future Foldable Power Sources” Energy & Environmental Science, 10, 1, (2017)

[12] S. C. Hong+, G. Lee+, K. Ha+, J. Yoon, N. Ahn, W. Cho, M. Park, M. Choi* “Precise Morphology Control and Continuous Fabrication of Perovskite Solar Cells Using Droplet-Controllable Electrospray Coating System” ACS Applied Materials & Interfaces, 9, 9, (2017)

[13] I. Jeon+, J. Yoon+, N. Ahn, M. Atwa, C. Delacou, A. Ansimov, E. Kauppinen, M. Choi*, S. Maruyama*, Y. Matsuo* “Carbon Nanotubes versus Graphene as Flexible Transparent Electrodes in Inverted Perovskite Solar Cells” The Journal of Physical Chemistry Letters, 8(21), 5395-5401 (2017)

[14] N Ahn+, I. Jeon+, J. Yoon, E. Kauppinen, Y. Matsuo*, S. Maruyama*, M. Choi* “Carbon-sandwiched Perovskite Solar Cells” Journal of Materials Chemistry A, 6 (4), 1382-1389 (2018)

[15] M. Park, W. Cho, G. Lee, S.C. Hong, M. Kim, J. Yoon, N. Ahn, M. Choi* “Highly Reproducible Large‐Area Perovskite Solar Cell Fabrication via Continuous Megasonic Spray Coating of CH3NH3PbI3” Small, 15, 1804005, (2019)

[16] M.-c. Kim+, N. Ahn+(co-first), E. Lim, Y. U. Jin, J. Heo, S. K. Kim, H. S. Jung*, M. Choi* “Degradation of CH3NH3PbI3 perovskite crystals via polarity dependent localized charges and its polarity dependency” Journal of Material Chemistry A, 7, 12075-12085 (2019)

[17] K. Kwak+, E. Im+, N. Ahn+(co-first), J. Heo, K. Bang, M. Kim, S. Kim*, M. Choi* “Atomistic mechanism for degradation of perovskite solar cell by trapped charge” Nanoscale, DOI: 10.1039/C9NR02193K (2019)

[18] G. Lee, M.-c. Kim, Y. W. Choi, N. Ahn, J. Yoon, S. M. Kim, J.-G. Lee, J. Jang, D. Kang, H. S. Jung*, M. Choi* “Ultra-flexible perovskite solar cells with crumpling durability: toward a wearable power source” Energy & Environmental Science, 12 (10), (2019)

[19] J. Byun+, J. Kim+, J. Kim, G. Lee, K. Bang, N. Ahn*(corresponding), M. Choi* “Charge transport layer dependent electronic band bending in perovskite solar cells and its correlation to device degradation” ACS Energy Letters, 5 (8), (2020)

[20] J. Song, P. Tyagi+, K. An, M. Park, H. Jung, N. Ahn, M. Choi, D. Lee, C. Lee * “Degradation of electrical characteristics in low-bandgap polymer solar cells associated with light-induced aging” Organic Electronics, 81, 105686 (2020)

[21] M.-c. Kim+, N. Ahn+(co-first) , D. Cheng+, M. Xu, X. Pan, S. J. Kim, Y. Luo, D. P. Fenning, D. H. Tan, M. Zhang, S.-Y. Ham, K. Jeong, M. Choi* and Y. S. Meng* “Imaging real-time amorphization of hybrid perovskite solar cells under electrical biasing” ACS Energy Letters, 6 (10), (2021)

[22] H. Jung, N. Ahn and V. I. Klimov* “Prospects and challenges of colloidal quantum dot laser diodes” Nature photonics, 15 (9), (2021)

[23] J. Xu, J. Xi, H. Dong, N. Ahn, Z. Zhu, J. Chen, P. Li, X. Zhu, J. Dai, Z. Hu, B. Jiao, X. Hou, J. Li, Z. Wu* “Impermeable inorganic “walls” sandwiching perovskite layer toward inverted and indoor photovoltaic devices” Nano Energy, 88, (2021)

[24] K. Jeong+, J. Byun+, J. Jang, N. Ahn*(corresponding), M. Choi* “Pulsatile therapy of perovskite solar cells” Joule, 6 (5), 1087-1102, (2022) 

[25] H. Jung, Y.-S. Park, N. Ahn, J. Lim, I. Fedin, C. Livache, and V. I. Klimov* “Two-Band Optical Gain and Ultrabright Electroluminescence from Colloidal Quantum Dots at 1000 A cm−2”, Nature Communications, 13  (1), (2022)

[26] N. Ahn, Y.-S. Park, C. Livache, J. Du, K. Gungor, J. Kim and V. I. Klimov* “Optically Excited Lasing in a Cavity‐Based, High‐Current‐Density Quantum Dot Electroluminescent Device” Advanced Materials, 2206613 (2023)

[27] J. Park, J. Byeon, J. Jang, M. Ko, N. Ahn, M. Choi*, H.-J. Song*“Electrically Reliable Perovskite Photovoltaic Cells Against Instantaneous Kilovolts Stress” Advanced Energy Materials, 2203012 (2023)

[28] N.Ahn, C. Livache, V. Pinchetti, H. Jung, H. Jin, D. Hahm, Y.-S. Park, V. I. Klimov* “Electrically Driven Amplified Spontaneous Emission from Colloidal Quantum Dots”, Nature, 617, 79–85 (2023) 

[29] N.Ahn+, C. Livache+, V. Pinchetti, V. I. Klimov* "“Colloidal Semiconductor Nanocrystal Lasers and Laser Diodes ", Chemical Reviews, 123, 13, 8251–8296 (2023)

[30] N. Ahn, M. Choi* “Towards Long-term Stable Perovskite Solar Cells: Degradation Mechanisms and Stabilization Techniques” Advanced Science, 2306110 (2023)

[31] ] X. Li, J. Du, G. Zhao, B. Zhang, C. Livache, N. Ahn, M. Li, J. Zhu, J. Guo, V. I. Klimov*, K. Wu* “Two-Color Amplified Spontaneous Emission from Auger-Suppressed Quantum Dots in Liquids”, Advanced Materials, 2308979 (2023)

[32] K. Jeong, E. Lim, J. Yang, J. Heo, W. Jung, S. Kim, N. Ahn*, M. Choi* "Trapped Charges: A Fundamental Cause for Light-Induced Instability in Perovskites", ACS Energy Letters, 9, 5670-5678, (2024)

[33] D.Hahm, V. Pinchetti, C. Livache, N. Ahn, J. Noh, X. Li, J. Du, K. Wu and V. I. Klimov* "Colloidal quantum dots enable tunable liquid-state lasers", Nature materials, 24, 48-55, (2024)

[34] S. Khan, R. Shrestha, M. Jin, D. Kim, G.-L. Chen, R. Li, Y. Gu, Q. Tu, N. Ahn, W. Nie* "Designing Robust Quasi‐2D Perovskites Thin Films for Stable Light‐Emitting Applications", Advanced Materials, 2413412, (2025)

[35] V. Sayevich, W.D. Kim, Z.L. Robinson, O.V. Kozlov, C. Livache, N. Ahn, H. Jung and V. I. Klimov* "Inverted CdSe/PbSe Core/Shell Quantum Dots with Electrically Accessible Photocarriers", ACS Energy Letters, 10, 1062-1071, (2025)